A review of recent progress in coatings, surface modifications and alloy developments for solid oxide fuel cell ferritic stainless steel interconnects

Shaigan, Nima; Qu, Wei; Ivey, Douglas G.; Chen, Weixing

doi:10.1016/j.jpowsour.2009.09.069

Cited by 593 publications

(296 citation statements)

References 133 publications

Supporting

Mentioning

286

Contrasting

Unclassified

Order By: Relevance

“…One of the simpler methods that may be used to fabricate thick films composed of this spinel is the cost-effective screen printing technique followed by appropriate heat treatment [20,21]. Nevertheless, to obtain a highly dense coating that adheres well to the substrate, it is recommended to use microparticle powders with desirable narrow distribution, i.e., a single modalsize particle distribution with very small amounts of agglomerates.…”

Section: Introductionmentioning

confidence: 99%

Mn–Co spinel protective–conductive coating on AL453 ferritic stainless steel for IT-SOFC interconnect applications

Kruk

Stygar

Brylewski

2012

J Solid State Electrochem

View full text Add to dashboard Cite

This paper presents research on the synthesis and properties of the Mn 1.5 Co 1.5 O 4 (MC) spinel powder, as well as its application for the preparation of a MC thick film on the AL453 steel to be used for metallic interconnect material in IT-SOFCs. In order to prepare the MC micropowder with excellent homogeneity of the chemical and phase compositions, EDTA gel processes were utilized. In order to improve the contact electrical resistance between an AL453 steel interconnect and the La 0.8 Sr 0.2 FeO 3 (LSF) cathode and protect the cathode from Cr poisoning, the surface of the AL453 steel was coated with a protective manganese cobaltite spinel matrix using screen printing in combination with an appropriate heat treatment. The oxidation of the AL453/MC composite layer carried out in the air-H 2 O gas mixture at 1,073 K for 55 h showed that the spinel coating may serve as an effective barrier against outward Cr diffusion from the AL453 steel and, therefore, significantly inhibit the formation of volatile Cr vapors from the chromia scale. The contact ASR study of the interconnect-cathode interface in the AL453/MC/LSCM/LSF/LSCM/MC/AL453 system carried out in the range of 723−1,073 K in air showed a very large drop in ASR compared to the resistance of the AL453/LSCM/LSF/LSCM/AL453 system without the spinel coating.

show abstract

Section: Introductionmentioning

confidence: 99%

Mn–Co spinel protective–conductive coating on AL453 ferritic stainless steel for IT-SOFC interconnect applications

Kruk

Stygar

Brylewski

2012

J Solid State Electrochem

View full text Add to dashboard Cite

show abstract

“…This is an interesting area of further research, also connected to the nascent field of interconnect coatings, [30] which can also mitigate the deleterious effects of oxidation-including chromium evaporation and poisoning-in porous metals for SOFCs.…”

Section: B Creep Propertiesmentioning

confidence: 99%

Effect of Oxidation on Creep Strength and Resistivity of Porous Fe-26Cr-1Mo

Scott

Dunand

2014

Metallurgical and Materials Transactions E

View full text Add to dashboard Cite

To investigate its application as a material for solid oxide fuel cell interconnects, oxidation rates of replicated E-Brite (Fe-26Cr-1Mo, wt pct) foams with 43 and 51 pct open porosity were measured in static laboratory air for up to 200 hours. Results correlate well with previously reported values for dense material when normalized by surface area. Area-specific resistance measurements, taken in the range of 823 K to 1073 K (550°C to 800°C) after 24 hours of oxidation at 1123 K (850°C), yield activation energies in the range 69 to 82 kJ mol À1 for porous E-Brite that closely match dense E-Brite. Compressive creep properties, measured at 1073 K (800°C) for pristine and oxidized porous E-Brite, show that pre-oxidation (10 hours at 1073 K (800°C)) led to a~100-fold decrease in creep rate. This is due to strengthening of the alloy foam by the formation of a continuous network of oxide, which coats the internal pore surface and reduces porosity by as much as 10 pct after 200 hours of oxidation at 1073 K (800°C). Choking of the fenestrations between the pores, however, leads to an increase in closed porosity. Strengthening and pore filling effects should be taken into account in the design of the SOFC stack when using E-Brite as a porous interconnect material.

show abstract

“…At such high temperatures, two mechanisms that are associated with the interconnect material contribute to the rapid degradation of the fuel cell: increased electrical resistance caused by a growing oxide scale [5] and poisoning of the cathode caused by volatilization of the chromium(VI) species from the Cr-rich oxide scale at the interconnect surface [6][7][8][9][10]. Custom-made steels have been developed to improve oxidation resistance; however, to mitigate Cr vapourization, these steels are coated with an oxide layer that reduces Cr vapourization [9,[11][12][13]. Furthermore, in addition to mitigating Cr vapourization, the coating material should possess high electrical conductivity at the desired operating temperature in order to avoid high electrical resistances caused by the coating.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Metallic Co-Coating Thickness on Ferritic Stainless Steels Intended for Use as Interconnect Material in Intermediate Temperature Solid Oxide Fuel Cells

et al. 2017

View full text Add to dashboard Cite

The effect of metallic Co-coating thickness on ferritic stainless steels is investigated. This material is suggested to be used as interconnect material in intermediate temperature solid oxide fuel cells. Uncoated, 200-, 600-, 1000-, and 1500-nm Co-coated Sanergy HT is isothermally exposed for up to 500 h in air at 650°C. Mass gain is recorded to follow oxidation kinetics, and area-specific resistance (ASR) measurements are conducted on samples exposed for 168 and 500 h. The microstructure of the thermally grown oxide scales is characterized utilizing scanning electron microscopy and energy-dispersive X-ray analysis on broad ion beam-milled cross sections. A clear increase in ASR as a function of Cocoating thickness is observed. However, the increase in ASR, as an effect of a thicker Co-coating, is correlated with thicker (Cr,Fe) 2 O 3 scales formed on these materials and not to an increase in Co spinel top layer thickness.

show abstract

A review of recent progress in coatings, surface modifications and alloy developments for solid oxide fuel cell ferritic stainless steel interconnects

Cited by 593 publications

References 133 publications

Mn–Co spinel protective–conductive coating on AL453 ferritic stainless steel for IT-SOFC interconnect applications

Mn–Co spinel protective–conductive coating on AL453 ferritic stainless steel for IT-SOFC interconnect applications

Effect of Oxidation on Creep Strength and Resistivity of Porous Fe-26Cr-1Mo

The Effect of Metallic Co-Coating Thickness on Ferritic Stainless Steels Intended for Use as Interconnect Material in Intermediate Temperature Solid Oxide Fuel Cells

Contact Info

Product

Resources

About